JP2547349Y2 - Spherical roller bearing - Google Patents
Spherical roller bearingInfo
- Publication number
- JP2547349Y2 JP2547349Y2 JP1991075884U JP7588491U JP2547349Y2 JP 2547349 Y2 JP2547349 Y2 JP 2547349Y2 JP 1991075884 U JP1991075884 U JP 1991075884U JP 7588491 U JP7588491 U JP 7588491U JP 2547349 Y2 JP2547349 Y2 JP 2547349Y2
- Authority
- JP
- Japan
- Prior art keywords
- spherical roller
- spherical
- plane
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6607—Retaining the grease in or near the bearing
- F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
- F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/56—Selection of substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は、合成樹脂製保持器を
有する球面ころ軸受に関する。BACKGROUND OF THE INVENTION This invention relates to a spherical roller bearing having a synthetic resin cage.
【０００２】[0002]
【従来の技術】従来、球面ころ軸受としては図４に示す
ように、内輪５１と、外輪５２と、内輪５１と外輪５２
の間に配置した２列の球面ころ５３,５３と、上記球面
ころ５３を保持する合成樹脂製の２つの保持器５５,５
５を備えたものがある。2. Description of the Related Art Conventionally, as a spherical roller bearing, as shown in FIG. 4, an inner ring 51, an outer ring 52, an inner ring 51 and an outer ring 52 are shown.
Between two rows of spherical rollers 53, 53, and two retainers 55, 5 made of synthetic resin for holding the spherical rollers 53.
Some have five.
【０００３】上記保持器５５は図５に示すように、大径
側環状部５６と小径側環状部５７とを複数の柱５８,５
８…で結合している。そして、これらの環状部５６,５
７と柱５８とで形成するポケット６０に上記球面ころ５
３を嵌合するようにしている。As shown in FIG. 5, the retainer 55 includes a large-diameter annular portion 56 and a small-diameter annular portion 57 formed of a plurality of columns 58,5.
8 ... And these annular parts 56,5
The spherical roller 5 is inserted into a pocket 60 formed by the
3 is fitted.
【０００４】上記柱５８の側面５８Ａは、球面ころ５３
に沿った球面の一部で構成されている。球面ころ５３に
対向する突起５９の側面５９Ａ,５９Ｂ,５９Ｃは、球面
ころ５３に沿った球面で構成されている。そして、球面
ころ５３の転動時に、上記突起５９の球面に形成された
側面５９Ｂの軸方向の両端の２点が球面ころ５３に接触
するようにして、球面ころ５３がポケット６０から抜け
出すことを防止している。[0004] The side surface 58A of the column 58 has a spherical roller 53.
And a part of the spherical surface along. The side surfaces 59A, 59B, 59C of the projection 59 facing the spherical roller 53 are formed of a spherical surface along the spherical roller 53. When the spherical roller 53 rolls, the two points at both ends in the axial direction of the side surface 59B formed on the spherical surface of the projection 59 are brought into contact with the spherical roller 53 so that the spherical roller 53 comes out of the pocket 60. Preventing.
【０００５】[0005]
【考案が解決しようとする課題】ところが、上記球面こ
ろ軸受は、その保持器５５の上記柱５８の中央の突起５
９の側面５９Ａ〜Ｃが球面ころ５３に沿った球面で構成
されているため、突起５９と球面ころ５３の間の隙間か
ら油が侵入しにくい上に、保持器５５の金型の製作が難
しいという問題がある。However, the spherical roller bearing is provided with a projection 5 at the center of the column 58 of the cage 55 thereof.
Since the side surfaces 59A to 59C are formed of spherical surfaces along the spherical rollers 53, it is difficult for oil to enter through the gap between the protrusions 59 and the spherical rollers 53, and it is difficult to manufacture a mold for the retainer 55. There is a problem.
【０００６】また、柱５８の側面５８Ａは、内輪５１側
の端部から外輪５２側の突起５９の両側の端部まで、球
面ころ５３に沿った３次元曲面である球面の一部で構成
されているため、上記突起５９の両側の端部が球面ころ
５３を覆う形になり、上記柱５８の側面５８Ａと球面こ
ろ５３の間の隙間からに油が侵入しにくくなる。したが
って、油膜形成が困難であるという問題がある。さら
に、上記側面５８Ａが球面構成であるため、保持器５５
のための金型の型抜きが難しいという製作上の問題があ
る。The side surface 58A of the pillar 58 is formed of a part of a spherical surface which is a three-dimensional curved surface along the spherical roller 53 from the end on the inner ring 51 side to the end on both sides of the projection 59 on the outer ring 52 side. Therefore, both ends of the projection 59 cover the spherical roller 53, so that oil does not easily enter the gap between the side surface 58 </ b> A of the column 58 and the spherical roller 53. Therefore, there is a problem that it is difficult to form an oil film. Further, since the side surface 58A has a spherical configuration, the retainer 55
There is a manufacturing problem in that it is difficult to remove the mold for molding.
【０００７】そこで、この考案の目的は、製作が容易で
あると共に、球面ころとの間に油膜を形成し易い合成樹
脂製保持器を備えた球面ころ軸受を提供することにあ
る。An object of the present invention is to provide a spherical roller bearing which is easy to manufacture and has a synthetic resin cage which easily forms an oil film between the spherical roller and the spherical roller.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、この考案の球面ころ軸受は、内輪と、外輪と、上記
内輪と外輪との間に配置され、大径側環状部と小径側環
状部とが複数の柱で結合されるように一体形成され、上
記大径側環状部、小径側環状部および複数個の柱によっ
てポケットが形成された合成樹脂製保持器と、上記ポケ
ットに嵌合された球面ころとを有する球面ころ軸受にお
いて、上記保持器の柱は、上記軸受の中心軸と上記球面
ころの軸心とを含む第１仮想平面に対して直交すると共
に、上記球面ころの軸心を含む第２仮想平面より内輪側
の内側部と、上記第２仮想平面より外輪側の外側部とか
らなり、上記内側部のポケットに面する側面は、上記球
面ころに沿った球面の一部からなり、上記外側部のポケ
ットに面する側面のうち上記軸受の軸方向中央部は、上
記内側部の上記球面と連なる第１の面と、上記第１の面
から外輪側に連なる第２の平面と、上記第２の平面から
外輪側に連なる第３の平面とからなり、上記第１の面
は、軸線方向に上記内側部の球面に沿うと共に中心軸が
上記第１仮想平面と平行に延びる円筒面の一部で構成さ
れ、上記第２の平面は上記球面ころ側へ傾斜しかつ上記
球面ころの転動時に上記球面ころと点接触し、上記第３
の平面は上記第１仮想平面と平行であり、上記外側部の
ポケットに面する側面のうち上記軸受の軸方向中央部の
側面を除く両端部の側面は、それぞれ上記第１の面を構
成する円筒面の一部で構成されていることを特徴として
いる。In order to achieve the above object, a spherical roller bearing of the present invention is arranged between an inner ring, an outer ring, and the inner and outer rings, and has a large-diameter annular portion and a small-diameter annular portion. And a synthetic resin retainer formed integrally with the part so as to be joined by a plurality of pillars and having a pocket formed by the large-diameter annular part, the small-diameter annular part and the plurality of pillars, and fitted into the pocket. In the spherical roller bearing having the spherical roller set forth above, the column of the cage is orthogonal to a first virtual plane including a center axis of the bearing and an axis of the spherical roller, and the axis of the spherical roller. A side surface facing the pocket of the inner portion is formed of an inner portion on the inner ring side from the second imaginary plane including the center and an outer portion on the outer ring side of the second imaginary plane. Of the side facing the pocket on the outside The axial center portion of the bearing is connected to a first surface connected to the spherical surface of the inner portion, a second plane connected to the outer ring from the first surface, and an outer ring connected to the second plane. The first surface is a part of a cylindrical surface extending along the spherical surface of the inner part in the axial direction and having a central axis extending in parallel with the first virtual plane. Is inclined toward the spherical roller side and comes into point contact with the spherical roller during rolling of the spherical roller.
Are parallel to the first imaginary plane, and the side surfaces of both ends of the side surface facing the pocket of the outer portion except the side surface at the axial center portion of the bearing constitute the first surface. It is characterized by being constituted by a part of a cylindrical surface.
【０００９】[0009]
【作用】上記構成によれば、上記保持器の柱の外側部の
軸方向中央部は、上記球面ころに対向する円筒面からな
る第１の面と、第２及び第３の平面を有する。このた
め、柱の外径側中央の突起が球面ころに沿った球面を有
する従来例と異なり、上記柱の外側部の中央部の円筒面
及び平面が球面ころに対向し、上記中央部の第３の平面
と球面ころとの間に楔形の隙間が形成され、上記柱の外
側部の中央部と球面ころの間の隙間から油が侵入しやす
くなって、油膜形成が容易になる。また、上記中央部の
ポケットに面する側面が、円筒面及び平面からなるの
で、上記柱の外側部の中央部のための金型の製作が容易
になる。According to the above construction, the axially central portion of the outer portion of the pillar of the retainer has the first surface composed of a cylindrical surface facing the spherical roller, and the second and third planes. Therefore, unlike the conventional example in which the projection at the center on the outer diameter side of the column has a spherical surface along the spherical roller, the cylindrical surface and the plane at the central portion of the outer portion of the column face the spherical roller, and A wedge-shaped gap is formed between the flat surface of No. 3 and the spherical roller, so that oil easily enters through a gap between the central portion of the outer portion of the column and the spherical roller, and an oil film is easily formed. Further, since the side surface of the central portion facing the pocket comprises a cylindrical surface and a flat surface, it is easy to manufacture a mold for the central portion of the outer portion of the column.
【００１０】上記第２の平面は、球面ころ側へ傾斜して
おり、球面ころの転動時に球面ころと点接触して、保持
器から球面ころが脱落することを防止する。[0010] The second plane is inclined toward the spherical roller, and prevents the spherical roller from falling off the cage due to point contact with the spherical roller during rolling of the spherical roller.
【００１１】また、上記外側部のポケットに面する側面
のうち上記軸受の軸方向中央部の側面を除く両端部の側
面は、それぞれ第１の面を構成する円筒面の一部で構成
されているので、上記外側部の軸方向両端部は球面ころ
を覆う形にならない。このため、柱の内輪側の端から外
輪側の突起の両端の端部までの側面が球面ころに沿った
球面で構成されている従来例に較べて、上記円筒面の両
端部と球面ころとの間の隙間から油が侵入し易すくな
り、球面ころと柱の間の油膜形成が容易になる。また、
上記柱の外側部の側面の軸方向両端部を円筒面の一部で
構成したことにより、上記保持器の金型の型抜きが容易
になる。Further, the side surfaces of both ends of the side surface of the outer portion facing the pocket other than the side surface of the central portion in the axial direction of the bearing are each constituted by a part of the cylindrical surface constituting the first surface. Therefore, both ends of the outer portion in the axial direction do not cover the spherical rollers. For this reason, compared with the conventional example in which the side surface from the end on the inner ring side of the pillar to the end of both ends of the projection on the outer ring side is formed of a spherical surface along the spherical roller, both ends of the cylindrical surface and the spherical roller are formed. Oil easily penetrates from a gap between the spherical rollers and the oil film between the spherical roller and the column is easily formed. Also,
By forming both ends in the axial direction of the side surface of the outer portion of the column with a part of the cylindrical surface, the die of the retainer can be easily removed.
【００１２】[0012]
【実施例】以下、この考案を図示の実施例により詳細な
説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG.
【００１３】この球面ころ軸受の実施例は、図１に示す
ように、内輪１と、外輪２と、上記内輪１と外輪２の間
に配置した合成樹脂製保持器５と、球面ころ３を備えて
いる。As shown in FIG. 1, this embodiment of the spherical roller bearing includes an inner ring 1, an outer ring 2, a synthetic resin cage 5 disposed between the inner ring 1 and the outer ring 2, and a spherical roller 3. Have.
【００１４】図１の右側半分は、図２に示す保持器５の
Ｌ−Ｌ断面に対応している。また、図１の左側半分は、
図２に示す保持器のＭ−Ｍ断面に対応している。The right half of FIG. 1 corresponds to the section LL of the retainer 5 shown in FIG. Also, the left half of FIG.
This corresponds to the cross section taken along line MM of the cage shown in FIG.
【００１５】上記保持器５は大径側環状部６と小径側環
状部７とを複数の柱８で結合しており、一体形成してい
る。上記環状部６と７および柱８とによってポケット２
０を形成し、このポケット２０に球面ころ３を嵌め込ん
でいる。In the retainer 5, the large-diameter annular portion 6 and the small-diameter annular portion 7 are connected by a plurality of columns 8, and are integrally formed. A pocket 2 is formed by the annular portions 6 and 7 and the pillar 8.
0 is formed, and the spherical roller 3 is fitted into the pocket 20.
【００１６】上記保持器５の柱８は、図２に示す柱８の
軸方向中央のＮ−Ｎ断面を部分的に表わす図３に示すよ
うに、上記内輪１の中心軸と上記球面ころ３の軸心Ｐと
を含む第１仮想平面Ｘに対して直交すると共に上記球面
ころ３の軸心Ｐを含む第２仮想平面Ｙより内輪側の内側
部８Ａと、第２仮想平面Ｙより外輪側の外側部８Ｂとか
らなる。As shown in FIG. 3, which partially shows a cross section taken along the line NN of the column 8 shown in FIG. 2, the center axis of the inner ring 1 and the spherical roller 3 are provided. The inner portion 8A that is orthogonal to the first virtual plane X including the axis P of the spherical roller 3 and that is closer to the inner ring side than the second virtual plane Y that includes the axis P of the spherical roller 3, and the outer ring side to the second virtual plane Y And an outer portion 8B.
【００１７】上記内側部８Ａは、球面ころ３に沿った球
面の一部である３次元曲面１０８Ａで構成されている。
この内側部８Ａの３次元曲面１０８Ａにより、ポケット
２０内の油が保持されるとともに、柱８の強度を向上さ
せている。The inner portion 8A is constituted by a three-dimensional curved surface 108A which is a part of a spherical surface along the spherical roller 3.
The oil in the pocket 20 is retained by the three-dimensional curved surface 108A of the inner portion 8A, and the strength of the column 8 is improved.
【００１８】また、図１および図３に示すように、上記
外側部８Ｂの軸方向中央部１００は、第１の面１００Ａ
と第２の平面１００Ｂと第３の平面１００Ｃとからな
る。第１の面１００Ａは上記内側部８Ａの３次元曲面１
０８Ａに連なっている。また、上記第１の面１００Ａ
は、軸線方向に上記内側部８Ａの３次元曲面１０８Ａの
球面に沿うと共に、すなわち上記球面の軸線方向の円弧
面を形成する曲率半径と同一の曲率半径Ｒの円弧面で形
成されると共に中心軸が上記第１仮想平面Ｘと平行に延
びる円筒面の一部で構成されている。すなわち上記円筒
面の中心軸は第２仮想平面Ｙに対して直交している。第
２の平面１００Ｂは、上記第１の面１００Ａに連なると
共に、上記球面ころ３側へ傾斜している。すなわち、上
記第２の平面１００Ｂは、第２仮想平面Ｙと球面ころ３
の周面との交点ニと、保持器５の外周面の延長線と球面
ころ３の周面との交点ホとを結ぶ線分ニ−ホに平行にな
っている。したがって、上記第２の平面１００Ｂは、球
面ころ３の転動時に球面ころ３と点接触するようになっ
ている。As shown in FIGS. 1 and 3, the central portion 100 of the outer portion 8B in the axial direction is the first surface 100A.
And a second plane 100B and a third plane 100C. The first surface 100A is a three-dimensional curved surface 1 of the inner portion 8A.
08A. Also, the first surface 100A
Are formed along the spherical surface of the three-dimensional curved surface 108A of the inner portion 8A in the axial direction, that is, formed by an arc surface having the same radius of curvature R as the radius of curvature forming the axial arc surface of the spherical surface, and Are formed by a part of a cylindrical surface extending in parallel with the first virtual plane X. That is, the central axis of the cylindrical surface is orthogonal to the second virtual plane Y. The second flat surface 100B is continuous with the first surface 100A and is inclined toward the spherical roller 3 side. That is, the second plane 100 </ b> B is the same as the second virtual plane Y and the spherical rollers 3.
Is parallel to a line segment e-hoc connecting an intersection e between the peripheral surface of the spherical roller 3 and an intersection e of the extension of the outer peripheral surface of the cage 5 and the peripheral surface of the spherical roller 3. Therefore, the second plane 100B comes into point contact with the spherical roller 3 when the spherical roller 3 rolls.
【００１９】第３の平面１００Ｃは、上記第２の平面１
００Ｂに連なると共に、上記第１の仮想平面Ｘと平行に
なっている。すなわち、第３の平面１００Ｃは第２仮想
平面Ｙに対して垂直である。The third plane 100C corresponds to the second plane 1
00B and parallel to the first virtual plane X. That is, the third plane 100C is perpendicular to the second virtual plane Y.
【００２０】上記第２の平面１００Ｂと第３の平面１０
０Ｃによって、図１に示すように、柱８のポケット２０
に面する軸方向の中央部１００の突起９が形作られてい
る。The second plane 100B and the third plane 10
0C, as shown in FIG.
The projection 9 of the axial central part 100 facing is formed.
【００２１】上記柱８の外側部８Ｂの軸方向中央部を除
く両端部の側面２００は、それぞれ図１に示すように、
第１の面１００Ａを構成する円筒面の一部で構成されて
いる。As shown in FIG. 1, the side surfaces 200 at both ends of the outer portion 8B of the pillar 8 except for the central portion in the axial direction are as shown in FIG.
The first surface 100A is constituted by a part of a cylindrical surface.
【００２２】上記構成によれば、上記保持器５の柱８の
外側部８Ｂの軸方向中央部１００のポケットに面する側
面は、上記球面ころ３に対向する円筒面である第１の面
１００Ａと、第２及び第３の平面１００Ｂ,１００Ｃか
らなる。このため、柱の外径側中央の突起が球面ころに
沿った曲面を有する従来例と異なり、上記柱８の外側部
８Ｂの中央部１００の円筒面である第１の面１００Ａ
と、第２及び第３の平面１００Ｂ,１００Ｃが球面ころ
３に対向し、図３に示すように、上記中央部１００の第
３の平面１００Ｃと球面ころ３との間に楔形の隙間Ｓが
形成され、楔形の隙間Ｓから油が侵入しやすくなって、
保持器５と球面ころ３との間の油膜形成を容易にでき
る。また、上記中央部１００が、球面でない第１〜第３
の円筒面及び平面１００Ａ〜１００Ｃを有するので、保
持器５の金型の製作と型抜きを容易にできる。According to the above configuration, the side surface of the outer portion 8B of the pillar 8 of the retainer 5 facing the pocket of the axial center portion 100 is the first surface 100A which is a cylindrical surface facing the spherical roller 3. And the second and third planes 100B and 100C. Therefore, unlike the conventional example in which the projection at the center on the outer diameter side of the column has a curved surface along the spherical roller, the first surface 100A which is the cylindrical surface of the central portion 100 of the outer portion 8B of the column 8 is provided.
And the second and third planes 100B and 100C face the spherical roller 3, and a wedge-shaped gap S is formed between the third plane 100C of the central portion 100 and the spherical roller 3 as shown in FIG. Formed, the oil easily penetrates through the wedge-shaped gap S,
An oil film between the cage 5 and the spherical roller 3 can be easily formed. In addition, the above-mentioned central portion 100 has a first to third
Since the cylindrical surface and the flat surfaces 100A to 100C are provided, it is possible to easily manufacture and remove the die of the retainer 5.
【００２３】上記第２の平面１００Ｂは、球面ころ３側
へ傾斜しているので、球面ころ３の転動時に球面ころ３
と点接触して、保持器５から球面ころ３が脱落すること
を防止できる。Since the second flat surface 100B is inclined toward the spherical roller 3, the spherical roller 3 rolls when the spherical roller 3 rolls.
, And the spherical roller 3 can be prevented from falling off the cage 5.
【００２４】また、上記外側部８Ｂの軸方向の両端部の
側面２００は、中心軸が径方向に延びる円筒面の一部で
構成されているので、側面２００と球面ころ３との間の
隙間が径方向放射状に開き、上記側面２００は球面ころ
３を覆う形にならない。このため、柱の内輪側の端部か
ら外輪側の端部までの側面が球面ころに沿った３次元曲
面である球面で構成されている従来例に比べて、側面２
００と球面ころ３との間の隙間から油が侵入し易すくな
り、球面ころ３と柱８の間の油膜形成を容易にできる。
また、上記柱８の側面２００を円筒面の一部で構成した
ので、上記保持器の金型の製作と型抜きを容易にでき
る。Further, since the side surfaces 200 at both ends in the axial direction of the outer portion 8B are formed by a part of a cylindrical surface whose central axis extends in the radial direction, the gap between the side surface 200 and the spherical roller 3 is formed. Are opened radially in the radial direction, and the side surface 200 does not cover the spherical roller 3. For this reason, compared with the conventional example in which the side surface from the inner ring side end portion to the outer ring side end portion of the column is a spherical surface that is a three-dimensional curved surface along the spherical rollers,
Oil easily enters from a gap between the spherical roller 3 and the spherical roller 3, and an oil film can be easily formed between the spherical roller 3 and the column 8.
In addition, since the side surface 200 of the column 8 is constituted by a part of the cylindrical surface, it is possible to easily manufacture and remove the mold of the retainer.
【００２５】[0025]
【考案の効果】以上の説明より明らかなように、この考
案の球面ころ軸受は、保持器の柱が、上記軸受の中心軸
と球面ころの軸心とを含む第１仮想平面に対して直交す
ると共に、上記球面ころの軸心を含む第２仮想平面より
内輪側の内側部と、上記第２仮想平面より外輪側の外側
部とからなり、上記内側部のポケットに面する側面は、
上記球面ころに沿った球面の一部からなり、上記保持器
の柱の外側部のポケットに面する側面のうち上記軸受の
軸方向中央部は、上記内側部の球面と連なると共に、中
心軸が上記第１仮想平面と平行に延びる円筒面の一部か
らなる第１の面と、上記第１の面から外輪側に連なると
共に上記球面ころ側へ傾斜しており、上記球面ころの転
動時に球面ころと点接触する第２の平面と、上記第２の
平面から外輪側に連なると共に上記第１仮想平面と略平
行な第３の平面とからなる。As is apparent from the above description, in the spherical roller bearing according to the present invention, the column of the cage has the pillar perpendicular to the first imaginary plane including the center axis of the bearing and the axis of the spherical roller. In addition, a side surface facing the pocket of the inner portion includes an inner portion on the inner ring side from the second virtual plane including the axis of the spherical roller, and an outer portion on the outer ring side from the second virtual plane.
The bearing is formed of a part of a spherical surface along the spherical roller, and the axially central portion of the bearing among the side surfaces facing the pocket on the outer portion of the column of the retainer is connected to the spherical surface of the inner portion, and has a central axis. A first surface which is a part of a cylindrical surface extending in parallel with the first virtual plane, and which extends from the first surface to the outer ring side and is inclined toward the spherical roller side, and when the spherical roller rolls, It comprises a second plane that makes point contact with the spherical rollers, and a third plane that extends from the second plane to the outer ring side and is substantially parallel to the first virtual plane.
【００２６】したがって、この考案の球面ころ軸受は、
柱の外径側中央の突起が球面ころに沿った球面を有する
従来例と異なり、上記柱の外側部の中央部の円筒面であ
る第１の面と、第２及び第３の平面が上記球面ころに対
向し、上記中央部の第３の平面と球面ころとの間にくさ
び形の隙間が形成され、上記柱の外側部の中央部と球面
ころの間の隙間から油が侵入しやすくなって、油膜形成
を容易にできる。また、上記中央部が、球面でない第１
〜第３の面からなるので、上記保持器の金型の製作と型
抜きを容易にできる。Therefore, the spherical roller bearing of the present invention is:
Unlike the conventional example in which the projection at the center on the outer diameter side of the column has a spherical surface along the spherical roller, the first surface, which is the cylindrical surface at the center of the outer portion of the column, and the second and third planes are the same as those described above. Opposite to the spherical roller, a wedge-shaped gap is formed between the third flat surface at the center and the spherical roller, and oil easily penetrates from the gap between the center of the outer part of the column and the spherical roller. Thus, oil film formation can be facilitated. In addition, the above-mentioned central portion is not spherical.
Since it is composed of the third surface, it is possible to easily manufacture and die-cut the mold for the retainer.
【００２７】また、上記第２の平面は、球面ころ側へ傾
斜しているので、球面ころの転動時に球面ころと点接触
して、保持器から球面ころが脱落することを防止でき
る。Further, since the second plane is inclined toward the spherical roller side, it is possible to prevent the spherical roller from falling off the retainer by making point contact with the spherical roller during rolling of the spherical roller.
【００２８】また、上記外側部のポケットに面する側面
のうち上記軸受の軸方向の両端部は、中心軸が径方向に
延びる円筒面の一部で構成されているので、上記外側部
の軸方向両端部は球面ころを覆う形にならない。したが
って、柱の内輪側の端から外輪側の突起の両側の端部ま
での側面が球面ころに沿った球面で構成されている従来
例に比べて、上記円筒面の一部で構成した両端部と球面
ころとの間の隙間から油が侵入し易すくなり、球面ころ
と柱の間の油膜形成を容易にできる。また、上記柱の外
側部の側面の軸方向両端部を円筒面の一部で構成したの
で、上記保持器の金型の製作と型抜きを容易にできる。The axially opposite ends of the bearing among the side faces of the outer portion facing the pocket are formed by a part of a cylindrical surface whose central axis extends in the radial direction. Both ends in the direction do not cover the spherical rollers. Therefore, compared with the conventional example in which the side surfaces from the inner ring side end of the pillar to the both end portions of the outer ring side projection are formed by spherical surfaces along the spherical rollers, both end portions formed by a part of the cylindrical surface. Oil easily enters from the gap between the spherical roller and the spherical roller, and the oil film between the spherical roller and the column can be easily formed. Further, since both axial end portions of the side surface of the outer portion of the column are formed of a part of the cylindrical surface, the die and the die of the retainer can be easily manufactured.
【図１】 この考案の球面ころ軸受の実施例の一部断面
図である。FIG. 1 is a partial sectional view of an embodiment of the spherical roller bearing of the present invention.
【図２】 上記実施例の保持器の一部平面図である。FIG. 2 is a partial plan view of the cage of the embodiment.
【図３】 上記保持器の柱の一部断面図である。FIG. 3 is a partial sectional view of a column of the cage.
【図４】 従来の球面ころ軸受の一部断面図である。FIG. 4 is a partial cross-sectional view of a conventional spherical roller bearing.
【図５】 従来の球面ころ軸受の保持器の一部斜視図で
ある。FIG. 5 is a partial perspective view of a conventional cage of a spherical roller bearing.
１,５１ 内輪 ２,５２ 外輪 ３,５３ 球面ころ ５,５５ 保持器 ６,５６ 大径側環状部 ７,５７ 小径側環状
部 ８,５８ 柱 ９,５９ 突起 ８Ａ 内側部 ８Ｂ 外側部 ２０,６０ ポケット １００ 中央部 １００Ａ 第１の面 １００Ｂ 第２の平面 １００Ｃ 第３の平面 １０８Ａ ３次元曲面1,51 Inner ring 2,52 Outer ring 3,53 Spherical roller 5,55 Cage 6,56 Large-diameter annular part 7,57 Small-diameter annular part 8,58 Column 9,59 Projection 8A Inner part 8B Outer part 20,60 Pocket 100 Central part 100A First plane 100B Second plane 100C Third plane 108A Three-dimensional curved surface
Claims (1)
に配置され、大径側環状部と小径側環状部とが複数の柱
で結合されるように一体形成され、上記大径側環状部、
小径側環状部および複数個の柱によってポケットが形成
された合成樹脂製保持器と、上記ポケットに嵌合された
球面ころとを有する球面ころ軸受において、 上記保持器の柱は、上記軸受の中心軸と上記球面ころの
軸心とを含む第１仮想平面に対して直交すると共に、上
記球面ころの軸心を含む第２仮想平面より内輪側の内側
部と、上記第２仮想平面より外輪側の外側部とからな
り、 上記内側部のポケットに面する側面は、上記球面ころに
沿った球面の一部からなり、 上記外側部のポケットに面する側面のうち上記軸受の軸
方向中央部は、上記内側部の上記球面と連なる第１の面
と、上記第１の面から外輪側に連なる第２の平面と、上
記第２の平面から外輪側に連なる第３の平面とからな
り、上記第１の面は、軸線方向に上記内側部の球面に沿
うと共に中心軸が上記第１仮想平面と平行に延びる円筒
面の一部で構成され、上記第２の平面は上記球面ころ側
へ傾斜しかつ上記球面ころの転動時に上記球面ころと点
接触し、上記第３の平面は上記第１仮想平面と平行であ
り、 上記外側部のポケットに面する側面のうち上記軸受の軸
方向中央部の側面を除く両端部の側面は、それぞれ上記
第１の面を構成する円筒面の一部で構成されていること
を特徴とする球面ころ軸受。An inner ring, an outer ring, and a large-diameter annular portion and a small-diameter annular portion are integrally formed so as to be connected to each other by a plurality of pillars. Side ring,
In a spherical roller bearing having a synthetic resin cage in which a pocket is formed by a small-diameter side annular portion and a plurality of pillars, and a spherical roller fitted in the pocket, the pillar of the cage is located at the center of the bearing. An inner portion that is orthogonal to a first imaginary plane that includes an axis and the axis of the spherical roller and that is closer to the inner ring than a second imaginary plane that includes the axis of the spherical roller, and that is closer to the outer ring than the second imaginary plane. The side surface facing the pocket of the inner portion is formed of a part of a spherical surface along the spherical roller, and the axial center portion of the bearing among the side surfaces facing the pocket of the outer portion is A first surface connected to the spherical surface of the inner portion, a second plane connected to the outer ring side from the first surface, and a third plane connected to the outer ring side from the second plane. The first surface is axially aligned with the spherical surface of the inner portion. In addition, the central axis is constituted by a part of a cylindrical surface extending in parallel with the first virtual plane, and the second plane is inclined toward the spherical roller and is in point contact with the spherical roller during rolling of the spherical roller. The third plane is parallel to the first imaginary plane. Of the side faces facing the pocket on the outer side, the side faces at both ends except the side face at the axial center of the bearing are respectively the first face. A spherical roller bearing comprising a part of a cylindrical surface constituting a surface of the spherical roller.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075884U JP2547349Y2 (en) | 1991-09-20 | 1991-09-20 | Spherical roller bearing |
| US07/944,942 US5295749A (en) | 1991-09-20 | 1992-09-15 | Spherical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075884U JP2547349Y2 (en) | 1991-09-20 | 1991-09-20 | Spherical roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0527341U JPH0527341U (en) | 1993-04-09 |
| JP2547349Y2 true JP2547349Y2 (en) | 1997-09-10 |
Family
ID=13589166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991075884U Expired - Lifetime JP2547349Y2 (en) | 1991-09-20 | 1991-09-20 | Spherical roller bearing |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5295749A (en) |
| JP (1) | JP2547349Y2 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364086B1 (en) | 1998-05-29 | 2002-04-02 | Rexroth Star Gmbh | Chain of rolling elements chain arrangement |
| JP4939685B2 (en) * | 1999-11-24 | 2012-05-30 | ボッシュ レックスロート メカトロニクス ゲーエムベーハー | Rolling element chain, rolling element chain device |
| DE20101760U1 (en) | 2001-02-01 | 2002-06-13 | Rexroth Star Gmbh | A roller chain |
| CN101187399B (en) * | 2003-09-30 | 2010-06-02 | Ntn株式会社 | Cylindrical roller bearing |
| WO2006057258A1 (en) * | 2004-11-24 | 2006-06-01 | Nsk Ltd. | Self-aligning roller bearing with retainer and method of manufacturing the retainer for the self-aligning roller bearing |
| JP2006226362A (en) * | 2005-02-16 | 2006-08-31 | Ntn Corp | Sprocket support structure for running speed change gear of construction machine |
| TWI273185B (en) * | 2005-11-11 | 2007-02-11 | Chieftech Prec Co Ltd | Ball chain |
| CN105003540B (en) | 2006-03-10 | 2018-07-27 | Ntn株式会社 | Liner |
| JP2008025608A (en) * | 2006-07-18 | 2008-02-07 | Jtekt Corp | Cage for roller bearing |
| DE102008016977A1 (en) * | 2008-04-03 | 2009-10-08 | Schaeffler Kg | Ball roller bearing and method for mounting such a ball roller bearing |
| JP6456919B2 (en) * | 2013-04-11 | 2019-01-23 | アクツィエブーラゲート エスケイエフＡｋｔｉｅｂｏｌａｇｅｔ ＳＫＦ | Rolling bearings with rolling elements arranged in several cage segments |
| JP2015102153A (en) * | 2013-11-25 | 2015-06-04 | 株式会社ジェイテクト | Split cage and roller bearing |
| AU2014365337B2 (en) * | 2013-12-20 | 2017-03-02 | Robert Bosch Gmbh | Oscillating mechanism for a power tool |
| CN103836067A (en) * | 2014-03-27 | 2014-06-04 | 山东凯美瑞轴承科技有限公司 | Sealed self-aligning roller bearing for high-speed rail and repair method thereof |
| US10001169B2 (en) | 2016-10-25 | 2018-06-19 | Schaeffler Technologies AG & Co. KG | Prong type cage for a double row roller bearing assembly |
| US10054163B2 (en) * | 2016-11-15 | 2018-08-21 | General Electric Company | Bearing cages for roller bearing assemblies |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2705176A (en) * | 1948-10-13 | 1955-03-29 | Skf Ind Inc | Sheet metal roller cage |
| US2969267A (en) * | 1956-10-23 | 1961-01-24 | Skf Svenska Kullagerfab Ab | Cage for rolling bodies in rolling bearings |
| SE432977B (en) * | 1982-06-09 | 1984-04-30 | Skf Ab | ROLL BEARINGS WITH CASTLE PLASTIC HALL |
| CA1228886A (en) * | 1983-01-21 | 1987-11-03 | Nozomu Morinaga | Roller bearing |
| IT8454107V0 (en) * | 1984-12-04 | 1984-12-04 | Riv Officine Di Villar Perosa | SPACER CAGE FOR THE BALL BEARINGS OF A BALL BEARING |
| FR2635672B1 (en) * | 1988-08-31 | 1991-09-13 | Minnesota Mining & Mfg | POLYFUNCTIONAL COMPOSITE BLOCK FOR MANUAL SURFACE TREATMENT |
| JPH0689781B2 (en) * | 1989-06-28 | 1994-11-14 | エヌティエヌ株式会社 | Cage made of synthetic resin for spherical roller bearings |
-
1991
- 1991-09-20 JP JP1991075884U patent/JP2547349Y2/en not_active Expired - Lifetime
-
1992
- 1992-09-15 US US07/944,942 patent/US5295749A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5295749A (en) | 1994-03-22 |
| JPH0527341U (en) | 1993-04-09 |
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